^
Sourcebooks has a number of couponable sale romances at the 99 cent to $2.99 mark, from their Casablanca imprint. Some of them are novellas, and a few have been offered free in the past, but a lot are full novels in assorted series, mostly contemporary and historical, and maybe you can fill some series gaps if you liked the freebies? There's about a dozen at each price point, from the looks of it, and clusters of stuff by the same authors.
Linkage for their listings, sorted by price @
Kobo
ETA: Diversion Books also has a bunch of old school backlist reprints at the 99 cent mark and up, and sadly, they no longer give us freebies, so it's probably worth looking at
their Kobo listings, too. And maybe
ePublishing Works!, too, who've got a bunch on sale at 99 cents (some previously free), but mostly at $2.99 which seems to be the regular price for most.